Thanks all for your input. Certainly the velocity is interesting but would not (able to manage getting down on a tadpole. Still a tad too big.(sorry). Did not see any Deltas there. The second 82 cm measuements is the issue.
The Di Blasi weighs 48 pounds and the folding measurements. Width is only 16 in. That gets it thro doors,on luggage racks,into cars.
Would take a Delta but have not found a suitable folding one. Thanks again for all your input